﻿using System.Collections.Generic;
using System.Linq;

namespace PKHeX.Core
{
    public static partial class Legal
    {
        internal const int MaxSpeciesID_4 = 493;
        internal const int MaxMoveID_4 = 467;
        internal const int MaxItemID_4_DP = 464;
        internal const int MaxItemID_4_Pt = 467;
        internal const int MaxItemID_4_HGSS = 536;
        internal const int MaxAbilityID_4 = 123;
        internal const int MaxBallID_4 = 0x18;
        internal const int MaxGameID_4 = 15; // CXD

        internal static readonly int[] Met_HGSS_0 =
        {
            0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
            19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45,
            46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
            73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99,
            100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
            122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
            144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165,
            166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187,
            188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209,
            210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231,
            232, 233, 234,
        };

        internal static readonly int[] Met_HGSS_2 =
        {
            2000, 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009, 2010, 2011,
            2012, 2013, 2014,
        };

        internal static readonly int[] Met_HGSS_3 =
        {
            3000, 3001, 3002, 3003, 3004, 3005, 3006, 3007, 3008, 3009, 3010,
            3011, 3012, 3013, 3014, 3015, 3016, 3017, 3018, 3019, 3020, 3021, 3022, 3023, 3024, 3025, 3026, 3027, 3028,
            3029, 3030, 3031, 3032, 3033, 3034, 3035, 3036, 3037, 3038, 3039, 3040, 3041, 3042, 3043, 3044, 3045, 3046,
            3047, 3048, 3049, 3050, 3051, 3052, 3053, 3054, 3055, 3056, 3057, 3058, 3059, 3060, 3061, 3062, 3063, 3064,
            3065, 3066, 3067, 3068, 3069, 3070, 3071, 3072, 3073, 3074, 3075, 3076
        };

        #region DP
        internal static readonly ushort[] Pouch_Items_DP = {
            68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 135, 136, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327
        };

        internal static readonly ushort[] Pouch_Key_DP = {
            428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440, 441, 442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460, 461, 462, 463, 464
        };

        internal static readonly ushort[] Pouch_TMHM_DP = {
            328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427
        };

        internal static readonly ushort[] Pouch_Mail_DP = {
            137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148
        };

        internal static readonly ushort[] Pouch_Medicine_DP = {
            17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54
        };

        internal static readonly ushort[] Pouch_Berries_DP = {
            149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212
        };

        internal static readonly ushort[] Pouch_Ball_DP = {
            1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
        };

        internal static readonly ushort[] Pouch_Battle_DP = {
            55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67
        };

        internal static readonly ushort[] HeldItems_DP = ArrayUtil.ConcatAll(Pouch_Items_DP, Pouch_Mail_DP, Pouch_Medicine_DP, Pouch_Berries_DP, Pouch_Ball_DP, Pouch_TMHM_DP.Take(Pouch_TMHM_DP.Length - 8).ToArray());
        #endregion

        #region Pt
        internal static readonly ushort[] Pouch_Items_Pt = {
            68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 135, 136, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327
        };

        internal static readonly ushort[] Pouch_Key_Pt = {
            428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440, 441, 442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460, 461, 462, 463, 464, 465, 466, 467
        };

        internal static readonly ushort[] Pouch_TMHM_Pt = Pouch_TMHM_DP;
        internal static readonly ushort[] Pouch_Mail_Pt = Pouch_Mail_DP;
        internal static readonly ushort[] Pouch_Medicine_Pt = Pouch_Medicine_DP;
        internal static readonly ushort[] Pouch_Berries_Pt = Pouch_Berries_DP;
        internal static readonly ushort[] Pouch_Ball_Pt = Pouch_Ball_DP;
        internal static readonly ushort[] Pouch_Battle_Pt = Pouch_Battle_DP;

        internal static readonly ushort[] HeldItems_Pt = ArrayUtil.ConcatAll(Pouch_Items_Pt, Pouch_Mail_Pt, Pouch_Medicine_Pt, Pouch_Berries_Pt, Pouch_Ball_Pt, Pouch_TMHM_Pt.Take(Pouch_TMHM_Pt.Length - 8).ToArray());
        #endregion

        #region HGSS
        internal static readonly ushort[] Pouch_Items_HGSS = Pouch_Items_Pt;

        internal static readonly ushort[] Pouch_Key_HGSS = {
            434, 435, 437, 444, 445, 446, 447, 450, 456, 464, 465, 466, 468, 469, 470, 471, 472, 473, 474, 475, 476, 477, 478, 479, 480, 481, 482, 483, 484, 501, 502, 503, 504, 532, 533, 534, 535, 536
        };

        internal static readonly ushort[] Pouch_TMHM_HGSS = Pouch_TMHM_DP;
        internal static readonly ushort[] Pouch_Mail_HGSS = Pouch_Mail_DP;
        internal static readonly ushort[] Pouch_Medicine_HGSS = Pouch_Medicine_DP;
        internal static readonly ushort[] Pouch_Berries_HGSS = Pouch_Berries_DP;

        internal static readonly ushort[] Pouch_Ball_HGSS = {
            1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 492, 493, 494, 495, 496, 497, 498, 499, 500
        };

        internal static readonly ushort[] Pouch_Battle_HGSS = Pouch_Battle_DP;

        internal static readonly ushort[] HeldItems_HGSS = ArrayUtil.ConcatAll(Pouch_Items_HGSS, Pouch_Mail_HGSS, Pouch_Medicine_HGSS, Pouch_Berries_HGSS, Pouch_Ball_Pt, Pouch_TMHM_HGSS.Take(Pouch_TMHM_HGSS.Length - 8).ToArray());
        #endregion

        internal static readonly int[] TM_4 =
        {
            264, 337, 352, 347, 046, 092, 258, 339, 331, 237,
            241, 269, 058, 059, 063, 113, 182, 240, 202, 219,
            218, 076, 231, 085, 087, 089, 216, 091, 094, 247,
            280, 104, 115, 351, 053, 188, 201, 126, 317, 332,
            259, 263, 290, 156, 213, 168, 211, 285, 289, 315,
            355, 411, 412, 206, 362, 374, 451, 203, 406, 409,
            261, 318, 373, 153, 421, 371, 278, 416, 397, 148,
            444, 419, 086, 360, 014, 446, 244, 445, 399, 157,
            404, 214, 363, 398, 138, 447, 207, 365, 369, 164,
            430, 433,
        };

        internal static readonly HashSet<int> HM_HGSS = new HashSet<int>
        {
            015, 019, 057, 070, 250, 249, 127, 431 // Whirlpool(HGSS)
        };

        internal static readonly HashSet<int> HM_DPPt = new HashSet<int>
        {
            015, 019, 057, 070, 432, 249, 127, 431 // Defog(DPPt)
        };

        internal static readonly HashSet<int> HM_4_RemovePokeTransfer = new HashSet<int>
        {
            015, 019, 057, 070, 249, 127, 431 // Defog(DPPt) & Whirlpool(HGSS) excluded
        };

        internal static readonly byte[] MovePP_DP =
        {
            00,
            35, 25, 10, 15, 20, 20, 15, 15, 15, 35, 30, 05, 10, 30, 30, 35, 35, 20, 15, 20, 20, 15, 20, 30, 05, 25, 15, 15, 15, 25, 20, 05, 35, 15, 20, 20, 20, 15, 30, 35, 20, 20, 30, 25, 40, 20, 15, 20, 20, 20,
            30, 25, 15, 30, 25, 05, 15, 10, 05, 20, 20, 20, 05, 35, 20, 25, 20, 20, 20, 15, 25, 15, 10, 40, 25, 10, 35, 30, 15, 20, 40, 10, 15, 30, 15, 20, 10, 15, 10, 05, 10, 10, 25, 10, 20, 40, 30, 30, 20, 20,
            15, 10, 40, 15, 10, 30, 20, 20, 10, 40, 40, 30, 30, 30, 20, 30, 10, 10, 20, 05, 10, 30, 20, 20, 20, 05, 15, 10, 20, 15, 15, 35, 20, 15, 10, 20, 30, 15, 40, 20, 15, 10, 05, 10, 30, 10, 15, 20, 15, 40,
            40, 10, 05, 15, 10, 10, 10, 15, 30, 30, 10, 10, 20, 10, 01, 01, 10, 10, 10, 05, 15, 25, 15, 10, 15, 30, 05, 40, 15, 10, 25, 10, 30, 10, 20, 10, 10, 10, 10, 10, 20, 05, 40, 05, 05, 15, 05, 10, 05, 15,
            10, 10, 10, 20, 20, 40, 15, 10, 20, 20, 25, 05, 15, 10, 05, 20, 15, 20, 25, 20, 05, 30, 05, 10, 20, 40, 05, 20, 40, 20, 15, 35, 10, 05, 05, 05, 15, 05, 20, 05, 05, 15, 20, 10, 05, 05, 15, 15, 15, 15,
            10, 10, 10, 20, 10, 10, 10, 10, 15, 15, 15, 10, 20, 20, 10, 20, 20, 20, 20, 20, 10, 10, 10, 20, 20, 05, 15, 10, 10, 15, 10, 20, 05, 05, 10, 10, 20, 05, 10, 20, 10, 20, 20, 20, 05, 05, 15, 20, 10, 15,
            20, 15, 10, 10, 15, 10, 05, 05, 10, 15, 10, 05, 20, 25, 05, 40, 10, 05, 40, 15, 20, 20, 05, 15, 20, 30, 15, 15, 05, 10, 30, 20, 30, 15, 05, 40, 15, 05, 20, 05, 15, 25, 40, 15, 20, 15, 20, 15, 20, 10,
            20, 20, 05, 05, 10, 05, 40, 10, 10, 05, 10, 10, 15, 10, 20, 30, 30, 10, 20, 05, 10, 10, 15, 10, 10, 05, 15, 05, 10, 10, 30, 20, 20, 10, 10, 05, 05, 10, 05, 20, 10, 20, 10, 15, 10, 20, 20, 20, 15, 15,
            10, 15, 20, 15, 10, 10, 10, 20, 05, 30, 05, 10, 15, 10, 10, 05, 20, 30, 10, 30, 15, 15, 15, 15, 30, 10, 20, 15, 10, 10, 20, 15, 05, 05, 15, 15, 05, 10, 05, 20, 05, 15, 20, 05, 20, 20, 20, 20, 10, 20,
            10, 15, 20, 15, 10, 10, 05, 10, 05, 05, 10, 05, 05, 10, 05, 05, 05,
        };

        internal static readonly HashSet<int> WildPokeBalls4_DPPt = new HashSet<int>
        {
            1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
            // Cherish ball not usable
        };

        internal static readonly HashSet<int> WildPokeBalls4_HGSS = new HashSet<int>
        {
            1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
            // Cherish ball not usable
            17, 18, 19, 20, 21, 22, 23
            // Comp Ball not usable in wild
        };

        internal static readonly int[] FutureEvolutionsGen4 =
        {
            700
        };

        internal static readonly HashSet<int> UnreleasedItems_4 = new HashSet<int>
        {
            005, // Safari Ball
            016, // Cherish Ball
            147, // Mosaic Mail
            499, // Sport Ball
            500, // Park Ball
        };

        internal static readonly bool[] ReleasedHeldItems_4 = Enumerable.Range(0, MaxItemID_4_HGSS+1).Select(i => HeldItems_HGSS.Contains((ushort)i) && !UnreleasedItems_4.Contains(i)).ToArray();

        internal static readonly int[] Tutors_4 =
        {
            291, 189, 210, 196, 205, 009, 007, 276,
            008, 442, 401, 466, 380, 173, 180, 314,
            270, 283, 200, 246, 235, 324, 428, 410,
            414, 441, 239, 402, 334, 393, 387, 340,
            271, 257, 282, 389, 129, 253, 162, 220,
            081, 366, 356, 388, 277, 272, 215, 067,
            143, 335, 450, 029
        };

        internal static readonly int[] SpecialTutors_4 =
        {
            307, 308, 338, 434
        };

        internal static readonly int[][] SpecialTutors_Compatibility_4 =
        {
            new[] { 006, 157, 257, 392 },
            new[] { 009, 160, 260, 395 },
            new[] { 003, 154, 254, 389 },
            new[] { 147, 148, 149, 230, 329, 330, 334, 371, 372, 373, 380, 381, 384, 443, 444, 445, 483, 484, 487 }
        };

        // Encounter Slots that are replaced
        internal static readonly int[] Slot4_Swarm = { 0, 1 };
        internal static readonly int[] Slot4_Time = { 2, 3 };
        internal static readonly int[] Slot4_Sound = { 2, 3, 4, 5 };
        internal static readonly int[] Slot4_Radar = { 4, 5, 10, 11 };
        internal static readonly int[] Slot4_Dual = { 8, 9 };

        internal static readonly HashSet<int> ValidMet_DP = new HashSet<int>
        {
            // 063: Flower Paradise unreleased DP event
            // 079: Newmoon Island unreleased DP event
            // 085: Seabreak Path unreleased DP event
            // 086: Hall of Origin unreleased event
            001, 002, 003, 004, 005, 006, 007, 008, 009, 010, 011, 012, 013, 014, 015, 016, 017, 018, 019, 020,
            021, 022, 023, 024, 025, 026, 027, 028, 029, 030, 031, 032, 033, 034, 035, 036, 037, 038, 039, 040,
            041, 042, 043, 044, 045, 046, 047, 048, 049, 050, 051, 052, 053, 054, 055, 056, 057, 058, 059, 060,
            061, 062,      064, 065, 066, 067, 068, 069, 070, 071, 072, 073, 074, 075, 076, 077, 078,      080,
            081, 082, 083, 084,           087, 088, 089, 090, 091, 092, 093, 094, 095, 096, 097, 098, 099, 100,
            101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
        };

        internal static readonly HashSet<int> ValidMet_Pt = new HashSet<int>(ValidMet_DP.Concat(new[]
        {
            63, 79, 85, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125,
        }));

        internal static readonly HashSet<int> ValidMet_HGSS = new HashSet<int>
        {
            080, 112, 113, 114, 115, 116,
            126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140,
            141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160,
            161, 162, 163, 164, 165, 166, 167, 168, 169, 170,      172, 173, 174, 175, 176, 177, 178, 179, 180, //171: Route 23 no longer exists
            181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200,
            201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220,
            221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232,      234,                               //233: Pokéwalker
        };

        internal static readonly HashSet<int> ValidMet_4 = new HashSet<int>(ValidMet_Pt.Concat(ValidMet_HGSS));

        internal static readonly HashSet<int> GiftEggLocation4 = new HashSet<int>
        {
            2009, 2010, 2011, 2013, 2014
        };

        internal static readonly HashSet<int> EggLocations4 = new HashSet<int>
        {
            2000, 2002, 2009, 2010, 2011, 2013, 2014
        };

        internal static int GetTransfer45MetLocation(PKM pk5)
        {
            if (pk5.Gen4 && pk5.FatefulEncounter)
            {
                var spec = pk5.Species;
                if (spec == 251) // Celebi
                    return Locations.Transfer4_CelebiUnused;
                if (243 <= spec && spec <= 245) // Beast
                    return Locations.Transfer4_CrownUnused;
            }
            return Locations.Transfer4; // Pokétransfer (not Crown);
        }

        internal static int[] RemoveMovesHM45(int[] moves)
        {
            var banned = GetFavorableHMBanlist(moves);

            for (int i = 0; i < 4; i++)
            {
                if (banned.Contains(moves[i]))
                    moves[i] = 0;
            }

            return moves;
        }

        /// <summary>
        /// Transfer via advantageous game
        /// </summary>
        /// <param name="moves">Current moves</param>
        /// <returns>Preferred move ban list</returns>
        private static HashSet<int> GetFavorableHMBanlist(int[] moves)
        {
            // if has defog, return ban list with whirlpool
            return moves.Contains(432) ? HM_HGSS : HM_DPPt;
        }
    }
}
